and obama have used to describe the war in syria. it does appear the united states is taking a sort of more proactive approach. it doesn't appear the u.s. is getting involved militarily but this language is different than the sort of diplomatic language we've seen in the past. this comes as syrian rebels are pushing in on damascus. we're also hearing that the u.s. and nato have decided to send patriot missiles to the turkish border along syria to help turkey prevent any type of attack from syrian jets. this is all as part of a plan to sort of put more and more pressure militarily pressure on the assad regime. whether or not it will change the outcome of this war or change the, sort of result of what the assad regime is doing is still very much unclear, jon. jon: the death toll continues to rise through all of this. conor powell, thanks. jenna: here is what we know about syria's chemical weapons. the country is home to one of the most advanced arsenals of chemical weapons in the entire world. it is also one of the countries, one of si